GENUINE NGK SPARK PLUGS . Plugs feature a fine-wire Iridium center electrode and Nickel-alloy ground electrodes for maximum engine horsepower and torque. 2005-2008 Chrysler 300 5.7L V8. 16 Spark Plugs.
1st off their ngk plugs, premium plugs, i only wanted to do this plug change one time , they were packaged great and arrived very fast. Pre- gaped. Ready to install.